How to stop laptop overheating, if still overheats after cleaning dust.

There is two kinds of overheating.Component specific overheating, caused by CPU or Graphics Processing Unit (GPU).
Overall temperature inside the laptop, caused by HDD and Battery.


99.9% cases its CPU,GPU or North bridge (if no GPU present). But in these 99.9% cases sometimes its not just gets fixed by cleaning the dust from heat-sink vents.

I am assuming you failed to fix overheating problem

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How to fix keys on laptop keypad not working even keypad already replaced.

If you replaced the keyboard and the same exact keys are still not working then you most likely have a system board issue.
But check basic things and make sure before turning to any chip level operation that did you insert the cable properly and is your zip connector or header of keypad is good or broken from anywhere?
Some of my known people who connected with the laptop computer hardware

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Power up a laptop motherboard without power button or power strip.

Yes we can power up a laptop without connecting it's power button board or power strip..!! same as a desktop mother board.
It's safe as well as desktop motherboard just you need to know how power system of motherboard is functioning or how it's work as we press power button.Switching the power 'on & off' is done by circuits on the motherboard.The circuits are triggered to change state by a

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HOW TO REPAIR LAPTOP CPU FAN CIRCUIT

If you have a working fan and it is properly connected with laptop motherboard and by bad luck it's not spinning as usual.
First of all try to update laptop BIOS and if still nothing fixed then come down to CHIP LEVEL treatment of laptop. Now only two thing you can do to make laptop again working.

1.Check +voltage and senser track from fan connector, find out the CPU fan PWM controller circuit

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Laptop Cpu Cooling Fan Not Working.....?

Yes, the fan, if plugged into the headers on the Motherboard, should be spinning. Even PWM controlled fans spin unless you manually disable them.
What kind of Laptop do you have? Usually, there's more than 1 fan header in Desktop Motherboard and You can always plug in the fan into a different fan header on the Motherboard to test the fan. but on Laptop motherboard there is only one header

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CHARGING PROBLEM IN LAPTOP there is a lot of problem facing by user and a chip level technical .one of them is laptop shuts down every time charger plugged in. Charging only works if connected before turning on laptop even A/C adopter is OK.This problem happens because of laptop charging circuit failure and it is not an easy job to diagnose problem on laptop motherboard.This problem happened

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